Originally Posted by Trav
And 3 wheel cylinders.
If only it were that simple!
Lever arm.
Operated by cable (which needs to be balanced left to right once each drum is adjusted). Rear brake bias is afforded by a slider on the crossover shaft that operates the four cables. One for each drum.
The real trick for three shoes is getting the clearance right. Balancing the eccentric and the floating pin so that the leading shoe forces the middle shoe tightly into the drum under braking.
That is your mechanical advantage. The "boost" in the system.
http://dmacweb.com/tech/brakes/bendix/BENDIX.htm
The system might pre-date even your mechanical beginnings...
And 3 wheel cylinders.
If only it were that simple!
Lever arm.
Operated by cable (which needs to be balanced left to right once each drum is adjusted). Rear brake bias is afforded by a slider on the crossover shaft that operates the four cables. One for each drum.
The real trick for three shoes is getting the clearance right. Balancing the eccentric and the floating pin so that the leading shoe forces the middle shoe tightly into the drum under braking.
That is your mechanical advantage. The "boost" in the system.
http://dmacweb.com/tech/brakes/bendix/BENDIX.htm
The system might pre-date even your mechanical beginnings...